Thumlers Tumblers 9 Lb Retainer Ring For A-R6 and A-R18 3-Pack Mouse over image to zoom Thumlers-Tumblers-9-Lb-Retainer-Ring-For-A-R6-and-A-R18-3-Pack-AR6-AR18 Thumlers-Tumblers-9-Lb-Retainer-Ring-For-A-R6-and-A-R18-3-Pack-AR6-AR18 Thumlers-Tumblers-9-Lb-Retainer-Ring-For-A-R6-and-A-R18-3-Pack-AR6-AR18 Have one to sell? Sell now Details about Thumler's Tumblers 9 Lb Retainer Ring For A-R6 and A-R18 3 Pack AR6 AR18 Has Greater Flexibility and Abrasion Resistance Than Natural Rubber These rings have a 15 Year Shelf Life! They Stay Pliable Down To -20 F